<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>perspective</title>
  <style>
    .wrapper {
      width: 50%;
      float: left;
    }

    .cube {
      font-size: 4em;
      width: 2em;
      margin: 1.5em auto;
      transform-style: preserve-3d;
      transform: rotateX(-35deg) rotateY(30deg);
    }

    .side {
      position: absolute;
      width: 2em;
      height: 2em;
      background: rgba(255, 99, 71, 0.6);
      border: 1px solid rgba(0, 0, 0, 0.5);
      color: white;
      text-align: center;
      line-height: 2em;
    }

    .front {
      transform: translateZ(1em);
    }

    .bottom {
      transform: rotateX(-90deg) translateZ(1em);
    }

    .top {
      transform: rotateX(90deg) translateZ(1em);
    }

    .left {
      transform: rotateY(-90deg) translateZ(1em);
    }

    .right {
      transform: rotateY(90deg) translateZ(1em);
    }

    .back {
      transform: translateZ(-1em);
    }
  </style>
</head>

<body>
  <div class="wrapper w1">
    <div class="cube">
      <div class="side front">1</div>
      <div class="side back">6</div>
      <div class="side right">4</div>
      <div class="side left">3</div>
      <div class="side top">5</div>
      <div class="side bottom">2</div>
    </div>
  </div>
  <div class="wrapper w2">
    <div class="cube">
      <div class="side front">1</div>
      <div class="side back">6</div>
      <div class="side right">4</div>
      <div class="side left">3</div>
      <div class="side top">5</div>
      <div class="side bottom">2</div>
    </div>
  </div>
</body>

</html>